'宣言 Public Const MmPerInch As System.Double
'使用法 Dim value As System.Double value = Unit.MmPerInch
public const System.double MmPerInch
'宣言 Public Const MmPerInch As System.Double
'使用法 Dim value As System.Double value = Unit.MmPerInch
public const System.double MmPerInch